103 lines
3.3 KiB
C++
103 lines
3.3 KiB
C++
// Specific definitions for VxWorks -*- C++ -*-
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// Copyright (C) 2000-2022 Free Software Foundation, Inc.
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//
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// This file is part of the GNU ISO C++ Library. This library is free
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// software; you can redistribute it and/or modify it under the
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// terms of the GNU General Public License as published by the
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// Free Software Foundation; either version 3, or (at your option)
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// any later version.
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// Under Section 7 of GPL version 3, you are granted additional
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// permissions described in the GCC Runtime Library Exception, version
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// 3.1, as published by the Free Software Foundation.
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// You should have received a copy of the GNU General Public License and
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// a copy of the GCC Runtime Library Exception along with this program;
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// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
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// <http://www.gnu.org/licenses/>.
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/** @file bits/os_defines.h
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* This is an internal header file, included by other library headers.
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* Do not attempt to use it directly. @headername{iosfwd}
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*/
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#ifndef _GLIBCXX_OS_DEFINES
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#define _GLIBCXX_OS_DEFINES 1
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// System-specific #define, typedefs, corrections, etc, go here. This
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// file will come before all others.
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// The system environment we can rely on varies across VxWorks
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// versions.
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#include <_vxworks-versions.h>
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// Weak refs are supported starting with VxWorks 7, in RTP mode only
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#if _VXWORKS_MAJOR_GE(7) && defined(__RTP__)
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#define _GLIBCXX_USE_WEAK_REF 1
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#else
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#define _GLIBCXX_USE_WEAK_REF 0
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#endif
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// We support TLS on VxWorks >= 6.6 (either directly or with emutls)
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#if !_VXWORKS_PRE(6, 6)
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#define _GLIBCXX_HAVE_TLS 1
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#endif
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// VxWorks7 comes with a DinkumWare library and the system headers which we
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// are going to include for libstdc++ have a few related intrinsic
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// assumptions. We control our own configuration here to best integrate with
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// this environment: use C99 math headers, do not use the FP macros for
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// dynamic cast by default (overriden for RTPs below) and arrange to disable
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// the system TR1 declarations as we'll provide ours.
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#if _VXWORKS_MAJOR_GE(7)
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#define _GLIBCXX_USE_C99_MATH 1
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#define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC 0
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#undef _HAS_TR1_DECLARATIONS
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#define _HAS_TR1_DECLARATIONS 0
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#else // VXWORKS_MAJOR < 7
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// For RTPs, use the VxWorks headers as a basis, from which we can use
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// C99 dynamic FP macros and expect (after fixincludes) accurate c++11
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// prototypes for FP.
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#ifdef __RTP__
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#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS 1
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#undef _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC
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#define _GLIBCXX_USE_C99_FP_MACROS_DYNAMIC 1
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#define __CORRECT_ISO_CPP11_MATH_H_PROTO_FP
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#else // !__RTP__
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// libstdc++ will include system headers and vxWorks.h ought to have
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// been included ahead for VxWorks kernel modules prior to VxWorks 7
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#include <vxWorks.h>
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#endif // __RTP__
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#endif // _VXWORKS_MAJOR >= 7
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// The min/max "functions" may be refered to with a namespace prefix.
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// Prevent possible redefinitions as macros from VxWorks headers.
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#undef NOMINMAX
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#define NOMINMAX 1
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// Do not include the inline definitions from VxWorks headers, as we'll
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// want to use the ones from libstdc++ instead.
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#undef _NO_CPP_INLINES
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#define _NO_CPP_INLINES 1
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#endif // _GLIBCXX_OS_DEFINES
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